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Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1667
Experience:  GM Grand Master Technician 2007. 14 year experience.
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Working on a 2000 gmc 2500 Sierra 6.0 I changed out the

Customer Question

Working on a 2000 gmc 2500 Sierra 6.0
I changed out the engine and have everything hooked back up, but it won't start
It clicks at starter, so I slow charged battery. Still only clicks when I try to start. So I changed starter, I still have the clicking at starter. I'm suspecting battery, but far as I know it worked fine before engine swap. Been have some below zero nights in a unheated shop over the duration of engine swap. ( about 2 weeks or so working on it here and there) . I am also suspecting a ground issue. I need some help. Thank you
Submitted: 11 months ago.
Category: GMC
Expert:  Gary replied 11 months ago.

Hi there,

First easy thing to do is measure the resistance in ohms from the engine to the frame.

Sounds like a ground strap missing.

Gary

Customer: replied 11 months ago.
Ok... Not sure how to do that
Expert:  Gary replied 11 months ago.

Do you have a Digital Multimeter?

Gary

Customer: replied 11 months ago.
Expert:  Gary replied 11 months ago.

Ok, select ohms (resistance), and measure between the engine block (good clean metal), and the battery negative terminal.

Should be at or near zero ohms.

Gary

Customer: replied 11 months ago.
Ok , I will do that. Will be a few days yet, will be out of town
Expert:  Gary replied 11 months ago.

Ok, I'll await for your reply after your tests.

Gary

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